DICRANACEAE 85 



Seta less than i inch long; yellowish in the two common 

 species, reddish in the others. 



Capsule cylindrical, symmclrical and erect, or unsymvietri^ 

 cat and slighlly inclined; reddish-brown; ma- 

 ture in autumn. 



Operculum long-beaked. 



Range, Newfoundland to Florida, west to the ^ -. 

 Pacific; Europe; Asia. J IT 



Dicranellaheteromalla (Dill.,L.) Schimp. Dicrandia 



, , . , 7 7 • 7 7 . heteromalla 



has the unsymmetrical capsule, slightly in- 

 clined, and when dry and empty it suddenly capsule en- 



1 , 1 , larged. 



curves in just below the mouth. 



Var. orthocarpa (Hedw.) E. G. B. has the capsule 

 erect and symmetrical, not curved in below the mouth. 



These two small mosses are typical little Dicranums. 

 Their long hair-like leaves, usually turned to one side, 

 and the long-beaked operculum are very characteristic. 

 Dicranum jlagcllare (p. 89) somew^hat resembles Di- 

 cranella, is next to these in size, and has erect capsules; 

 but it commonly growls on decaying logs, and the 

 stems are longer, thicker, and matted together with 

 radicles; the leaves are coarser, usually crisped when 

 dry; and if the tiny branchlets (flagella) can be seen 

 sticking up above the upper leaves, one may be sure 

 that the moss is Dicranum jlagcllare and not Dicra- 

 nella. Ditrichum pallidum (p. 80) has hair-like 

 leaves, yellow seta, and erect capsule; but leaves, seta, 

 and capsule are all longer than in Dicranella. See also 

 Weisia (p. 100). 



